Method of manufacturing ultra-black film

Details Method of manufacturing ultra-black film Method of manufacturing ultra-black film

1990-10-11

1991-12-24

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156656, 156664, 252 792, 427305, B44C 122, C23F 100

Patent

active

050749579

ABSTRACT:
An ultra-black film is disclosed, which essentially consists of a base, a Ni-P alloy layer formed on said base and a phosphate layer formed on said Ni-P layer, the spectral reflectance of said ultra-black film being 0.04 to 0.4%. The ultra-black film is obtainable by one of four methods, i.e., a first method, which comprises sequential steps of effecting primary etching of a Ni-P alloy film surface with an aqueous nitric acid solution and effecting secondary etching of the surface with an aqueous sulfuric-acid-containing nitrate solution, a second method, which comprises of effecting said secondary etching of a Ni-P alloy film surface a third method, which comprises sequential steps of forming a Ni-P alloy film on a base by using a plating solution basically composed of nickel salt, sodium hypophosphite, D, L-malic acid and malonic acid and effecting said secondary etching to the alloy film surface and a fourth method, which comprises sequential steps of forming a Ni-P alloy film on a base by using a plating solution basically composed of nickel salt, sodium hypophosphite, D, L-malic acid and succinic acid or basically composed of nickel salt, sodium hypophosphite, D, L-malic acid lactic acid and malonic acid and effecting said primary etching to the surface.

REFERENCES:
patent: 3208447 (1965-09-01), Laszlo
patent: 3357584 (1967-12-01), Hays
patent: 4122239 (1978-10-01), Riboulet et al.
patent: 4209008 (1980-06-01), Lemkey et al.
patent: 4233107 (1980-11-01), Johnson, Sr.
patent: 4361630 (1982-11-01), Johnson, Sr.
patent: 4511614 (1985-04-01), Greeson et al.
patent: 4984855 (1991-01-01), Horiuti et al.
"Black Electroless Nickel Surface Morphologies with Extremely High Light Absorption Capacity", by Christian E. Johnson, National Bureau of Standards, Washington, D.C.; Metal Finishing, Jul. 1980; vol 78.
Literature "S-780 (Continuous Electroless Nickel Plating Solution)", by Nippon Kanigen Co., Ltd.
Literature "Sumer", by Nippon Kanigen Co., Ltd.
Literature "Electroless Nickel Plating--Kanigen Process", by Nippon Kanigen Co., Ltd.
Patents Abstract of Japan, vol. 3, No. 41 (E-103), Apr. 10, 1979, p. 55, & JP-A-54 20 746 (Tokyo Shibaura Denki K.K.) 16-02-1979 *Abstract*.

Affiliated with

Also associated with

Rating

Method of manufacturing ultra-black film does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of manufacturing ultra-black film, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing ultra-black film will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-41388